PHYSICAL AND MECHANICAL-PROPERTIES IN NI3AL WITH AND WITHOUT BORON

This paper will provide a review of recent research activities of the physical and mechanical properties in Ni3Al with and without boron, pa rticularly concentrated on the chemical features related to deformatio n behavior. Ductility improvement by boron addition and stoichiometry controlling will be explained from the viewpoint of grain boundary che mistry related to bulk physical properties. There have not been accumu lated enough fundamental data and results for ductility or deformabili ty compared with those for strengthening. The conclusion with emphasis in this paper are that there are so many unsolved subjects in both me chanisms for physical and mechanical properties and further additional works are necessary to solve them from both fundamental and applicati on Interests. (C) 1997 Elsevier Science S.A.